ABSTRACT The cavitation phenomenon is an important factor affecting the safe and stable operation of hydraulic machinery units. The cavitation of the hydraulic machinery units can lead to the increased vibration, reduced efficiency, and cavitation erosion of blades. Therefore, a method is needed to determine the incipient cavitation of hydraulic machinery runner blades. This study is initiated from the acoustic characteristics of bubbles generated by the cavitation of model hydraulic turbines and the characteristics of radiated sound energy during cavitation. The characteristics of cavitation noise are studied. After the qualitative analysis of the high- and low-frequency energy distribution patterns of cavitation noise signals before and after cavitation, a mathematical model of the time-frequency characteristics of these signals is proposed using the energy distribution analysis method. The feature information is extracted from the cavitation noise signals and used to judge the occurrence of incipient cavitation in model turbine runner blades. Based on this method, an online cavitation monitoring system is constructed, and comparative tests are carried out on a model pump turbine and Francis turbine. It is found that the results of the proposed method for the judgment of incipient cavitation are highly consistent with those of traditional methods. vibration efficiency blades Therefore studied high lowfrequency low frequency timefrequency time constructed methods

RESUMO Introdução: As atividades esportivas comunitárias são realizadas por pessoas do meio comunitário, utilizando fatores benéficos como equipes esportivas, instalações e recursos naturais da comunidade para melhorar sua estrutura e funções corporais e seus níveis de participação na atividade. Objetivo: A tese estuda como usar a estrutura e a teoria da “Classificação Internacional de Funções, Incapacidade e Saúde” e as “Diretrizes de Reabilitação Comunitária” da Organização Mundial de Saúde para construir um sistema de serviços esportivos para promover a saúde da comunidade. Métodos: A tese usa a teoria e métodos relacionados à função, deficiência e saúde da Classificação Internacional de Funções, Incapacidade e Saúde, e a matriz das Diretrizes de Reabilitação Comunitária da Organização Mundial de Saúde como uma estrutura para atividades esportivas comunitárias e desenvolvimento integrado. Resultados: O desenvolvimento de serviços de atividades esportivas comunitárias pode melhorar a função física e a capacidade atlética dos diferentes participantes, promover comportamentos saudáveis, melhorar a saúde mental e melhorar a felicidade. As atividades esportivas da comunidade podem promover saúde, reabilitação, educação, desenvolvimento profissional e empoderamento da comunidade. O desenvolvimento integrado de atividades esportivas comunitárias e atividades de saúde e reabilitação comunitárias criará um sistema moderno de serviços de saúde. Conclusões: Use a “Classificação Internacional de Função, Incapacidade e Saúde” para construir uma estrutura de atividade esportiva comunitária baseada na orientação funcional e saúde geral. Use a matriz e os métodos das “Diretrizes de Reabilitação da Comunidade” da Organização Mundial da Saúde para promover a integração das atividades esportivas com atividades como saúde, reabilitação, educação, desenvolvimento profissional e capacitação para alcançar o desenvolvimento comunitário inclusivo e saúde da comunidade em geral. Nível de evidência II; Estudos terapêuticos: investigação dos resultados do tratamento.

ABSTRACT Introduction: Community sports activities are performed by people in the community environment, using beneficial factors such as sports equipment, facilities, and natural resources in the community to improve their body structure and functions, and their activity participation levels. Objective: The thesis studies how to use the framework and theory of “International Classification of Functions, Disability and Health” and World Health Organization “Community Rehabilitation Guidelines” to construct a sports service system to promote community health. Methods: The thesis uses the theory and methods related to function, disability, and health of the International Classification of Functions, Disability, and Health, and the matrix of the World Health Organization's Community Rehabilitation Guidelines as the framework for community sports activities and integrated development. Results: The development of community sports activity services can improve the physical function and athletic ability of different participants, promote healthy behaviors, improve mental health, and improve happiness. Community sports activities can promote the community's health, rehabilitation, education, career development, and empowerment. The integrated development of community sports activities and community health and rehabilitation activities will build a modern health service system. Conclusions: Use “International Classification of Function, Disability, and Health” to construct a community sports activity framework based on function orientation and overall health. Use the matrix and methods of the World Health Organization's “Community Rehabilitation Guidelines” to promote the integration of sports activities with activities such as health, rehabilitation, education, professional development, and empowerment to achieve inclusive community development and overall community health. Level of evidence II; Therapeutic studies - investigation of treatment results.

RESUMEN Introducción: Las actividades deportivas comunitarias son realizadas por personas del entorno comunitario, utilizando factores beneficiosos como equipos deportivos, instalaciones y recursos naturales de la comunidad para mejorar su estructura y funciones corporales, y sus niveles de participación en la actividad. Objetivo: La tesis estudia cómo utilizar el marco y la teoría de la “Clasificación internacional de funciones, discapacidad y salud” y las “Pautas de rehabilitación comunitaria” de la Organización Mundial de la Salud para construir un sistema de servicios deportivos para promover la salud comunitaria. Métodos: La tesis utiliza la teoría y los métodos relacionados con la función, la discapacidad y la salud de la Clasificación Internacional de Funciones, Discapacidad y Salud, y la matriz de las Pautas de rehabilitación comunitaria de la Organización Mundial de la Salud como marco para las actividades deportivas comunitarias y el desarrollo integrado. Resultados: El desarrollo de servicios comunitarios de actividades deportivas puede mejorar la función física y la capacidad atlética de los diferentes participantes, promover comportamientos saludables, mejorar la salud mental y mejorar la felicidad. Las actividades deportivas comunitarias pueden promover la salud, la rehabilitación, la educación, el desarrollo profesional y el empoderamiento de la comunidad. El desarrollo integrado de las actividades deportivas comunitarias y las actividades comunitarias de salud y rehabilitación construirá un moderno sistema de servicios de salud. Conclusiones: Utilice la “Clasificación internacional de función, discapacidad y salud” para construir un marco de actividad deportiva comunitaria basado en la orientación funcional y la salud en general. Utilice la matriz y los métodos de las “Pautas de rehabilitación comunitaria” de la Organización Mundial de la Salud para promover la integración de actividades deportivas con actividades como salud, rehabilitación, educación, desarrollo profesional y empoderamiento para lograr el desarrollo comunitario inclusivo y la salud comunitaria en general. Nivel de evidencia II; Estudios terapéuticos: investigación de los resultados del tratamiento.

Studies often neglect the different trends between enantiomers in soil chiral contaminants. In the present study, paclobutrazol was chosen as the target analyte and the selective degradation patterns of this chiral pesticide were investigated in soils. After 14 days of culture, the degradation kinetics results demonstrated the degradation process of the two enantiomers conforms to first-order degradation kinetics equation, and the degradation rates were significantly different (paired t-test, P < 0.05). The degradation rate of (2S,3S)-paclobutrazol (S-paclobutrazol) was higher than that of (2R,3R)-paclobutrazol (R-paclobutrazol), with the concentration decrease of 42.6 and 28.7%, respectively. Meanwhile, the enantiomer fraction (EF) was 0.43 at final sampling point, and the half-life (t1/2) of S-paclobutrazol and R-paclobutrazol were 17.3 and 28.9 days, which demonstrated significant enantioselective degradation. Results from this study served to enhance our understanding about the enantioselective degradation behaviors of chiral pesticides, which provided some scientific basis for the potential risk assessment of chiral pesticides in the environment.

A novel, rapid and efficient manual shaking and ultrasound-assisted surfactant-enhanced emulsification microextraction (M-UASEME) combined with gas chromatography-flame photometric detection (GC-FPD) was developed for the extraction and determination of eight organophosphorus pesticides (OPPs) in tap water and honey samples. The main parameters that affected the extraction efficiency were investigated and optimized. Under the optimum conditions, the relative standard deviation (RSD, n = 6) ranged from 2.4 to 9.3%. Limits of detection (LOD) were varied between 0.005 and 0.05 µg L-1. Good linearity was obtained in a range of 0.5-50.0 µg L-1 for all analytes with the correlation coefficients (r) > 0.9964. Finally, the developed method was successfully applied to determine the eight pesticide residues in real samples. The recoveries of the target analytes in samples were between 82.4 and 96.7%.

Melanin extracted from Auricularia auricula fruiting bodies (AAFB) was examined by element analyzer, amino acid analyzer, inductively coupled plasma-optical emission spectrometry. Elemental composition analysis revealed that main component of AAFB melanin was pheomelanin. Amino acid analysis showed that 16 amino acids were found in AAFB melanin and total amino acid content was 321. 63 mg/g. There were 13 detectable metal elements in AAFB melanin, which was rich in Ca, Fe, Cu and Zn. In addition, AAFB melanin exhibited stronger scavenging activities on 2,2-diphenyl-l-picrylhydrazyl (DPPH) radical, superoxide radical and hydroxyl radical with IC50 values of 0.18, 0.59 and 0.34 mg/mL, respectively. These results indicated that AAFB melanin might be potentially used as a natural antioxidant.

Reaction of [MoO2(acac)2] (where acac = acetylacetonate) with two similar hydrazone ligands in methanol yielded two water coordinated mononuclear molybdenum(VI) oxo complexes with general formula [MoO2L(OH2)], where L = L¹ = N'-(2-hydroxy-3-methoxybenzylidene)-2-methoxybenzohydrazide (H2L¹), and L = L² = N'-(3-ethoxy-2-hydroxybenzylidene)-2-methoxybenzohydrazide (H2L²). Crystal and molecular structures of the complexes were determined by single crystal X-ray diffraction method. All of the investigated compounds were further characterized by elemental analysis and FT-IR spectra. Single crystal X-ray structural studies indicate that the hydrazone ligands coordinate to the MoO2 cores through enolate oxygen, phenolate oxygen and azomethine nitrogen. The Mo atoms in both complexes are in octahedral coordination.